US11077567B2 - Automatically retracting scraper with blade stop - Google Patents
Automatically retracting scraper with blade stop Download PDFInfo
- Publication number
- US11077567B2 US11077567B2 US16/382,496 US201916382496A US11077567B2 US 11077567 B2 US11077567 B2 US 11077567B2 US 201916382496 A US201916382496 A US 201916382496A US 11077567 B2 US11077567 B2 US 11077567B2
- Authority
- US
- United States
- Prior art keywords
- slider
- blade
- rotating stop
- scraper
- automatically retracting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active, expires
Links
- 230000014759 maintenance of location Effects 0.000 claims description 4
- 230000000717 retained effect Effects 0.000 claims 2
- 239000002184 metal Substances 0.000 description 4
- 210000003811 finger Anatomy 0.000 description 3
- 210000003813 thumb Anatomy 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- -1 labels Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/16—Rigid blades, e.g. scrapers; Flexible blades, e.g. wipers
- B08B1/165—Scrapers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B5/00—Hand knives with one or more detachable blades
- B26B5/001—Hand knives with one or more detachable blades with blades being slid out of handle immediately prior to use
- B26B5/003—Hand knives with one or more detachable blades with blades being slid out of handle immediately prior to use comprising retraction means for the blade or the blade holder
-
- B08B1/005—
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44D—PAINTING OR ARTISTIC DRAWING, NOT OTHERWISE PROVIDED FOR; PRESERVING PAINTINGS; SURFACE TREATMENT TO OBTAIN SPECIAL ARTISTIC SURFACE EFFECTS OR FINISHES
- B44D3/00—Accessories or implements for use in connection with painting or artistic drawing, not otherwise provided for; Methods or devices for colour determination, selection, or synthesis, e.g. use of colour tables
- B44D3/16—Implements or apparatus for removing dry paint from surfaces, e.g. by scraping, by burning
- B44D3/162—Scrapers
- B44D3/164—Scrapers comprising blades
Definitions
- This application is in the field of scrapers.
- a scraper with auto-retract functionality would be beneficial as a safety improvement to allow the blade to be exposed and extended from the housing in use, then auto-retracted for storage between uses while in a hand, a pocket, pouch, or other storage means.
- the problem with a typical auto-retract configuration is that when force is applied against the edge of the blade in the direction of the main longitudinal axis of the housing, the operational digit (for example, thumb or finger) applies a variable load or force against a slider in order to keep the blade extended from the housing.
- the operational digit for example, thumb or finger
- the force required to scrape effectively produces a non-constant, non-uniform force. Therefore, the combination of non-uniform/non-constant force, and the requirement to constantly apply force to the slider to keep it fully extended quickly produces fatigue to the finger or thumb of the user of this type of scraper.
- the auto-retract scrape comprises a housing, a slider, a blade, a rotating hard stop, and a torsion spring.
- the rotating hard stop is rotated clockwise forcing the blade forward and out of the housing when the slider is engaged.
- FIG. 1 is an example of a scraper
- FIG. 2 is an example of a side view of the scraper
- FIG. 3 is an example of a front view of the scraper
- FIG. 4 is an example of a rear view of the scraper
- FIG. 5 a -5 c are an example of the rotating hard stop in a first position
- FIG. 6 is an example of the rotating hard stop in an intermediate position
- FIG. 7 is an example of the rotating hard stop in a the final locked position
- FIG. 8 is an example of a slider blade release
- FIG. 9 is an example of the blade retention tabs.
- the present invention generally relates to automatic scrapers. Specifically, embodiments of the present invention relate to a scraper with an auto-retractable blade. Embodiments of the scraper are further comprised of a blade slider button and an interlocking mechanism.
- the scraper described herein may be comprised of a body section, a slider button, a blade, and an interlocking mechanism.
- the body section may be comprised of a top piece and a bottom piece.
- the interlocking mechanism may be comprised of a rotating hard stop and a torsion spring.
- the scraper described herein may have a v-shaped head.
- the scraper described herein may have flexible tangs on either side of the blade on the carrier.
- the tangs may keep the blade from falling out of the housing when the blade is fully extended to change the blade.
- the scraper described herein may have a replaceable blade.
- FIGS. 1-4 are an example of an auto-retract scraper from different perspectives.
- the scraper 100 may include a housing 101 and a slider 102 .
- the housing 101 may include a top and bottom cover.
- the housing 101 may further include a rotating hard stop, a torsion spring, a slider return spring, and a blade.
- the blade may be ceramic.
- the slider button 102 when engaged, may force the blade to extend out from the housing 101 of the scraper.
- FIG. 2 is an example of a side view of the scraper.
- the scraper 100 may include a housing 101 and a slider 102 .
- FIG. 3 is an example of a front view of the scraper.
- the scraper 100 may include a housing 101 and a slider 102 .
- FIG. 4 is an example of a rear view of the scraper.
- the scraper 100 may include a housing 101 and a slider 102 .
- the scraper described herein may improve an interlocking aspect by using a rotating hard stop (or rotating blade stop) in combination with a torsion spring.
- An embodiment of the present invention does not depend on plastic materials for the rotational return spring function.
- the rotating hard stop and the metal torsion spring allows for a separation of the mechanical strength requirements of the rotating hard stop from the metal spring return requirements of the torsion spring.
- a rotating hard stop or rotating blade stop in combination with the torsion spring are at least one aspect of the scraper that helps differentiate it from any prior art. This combination does not depend on plastic materials for the rotational return spring function.
- the rotating plastic hard stop and the metal torsion spring allow the embodiment to separate the mechanical strength requirements of the plastic hard stop from the metal spring return requirements of the torsion spring. This combination may improve both quality and repeatability of a mechanism that requires robust performance over a wide range of temperatures, and over a long life cycle with very high duty cycle requirements.
- FIGS. 5-7 The preferred embodiment is illustrated in FIGS. 5-7 .
- FIGS. 5 a -5 c are an example of the rotating hard stop in a first position.
- FIG. 5 shows a housing 101 including a bottom cover 221 , a slider (or blade carrier) 102 , a rotating hard stop (or rotating blade stop) 203 , a torsion spring 217 , a slider return spring 216 , and a blade (for example, a ceramic blade) 222 .
- the rotating hard stop 203 may be urged in a clockwise rotation about a centerline “Z” rotational axis 207 by the slider 102 , as the slider 102 is pushed in a horizontal “X” axis direction engaging a pusher face 209 to bear force against the rotating hard stop 203 .
- FIG. 5 shows a housing 101 including a bottom cover 221 , a slider (or blade carrier) 102 , a rotating hard stop (or rotating blade stop) 203 , a torsion spring 217 , a slider return spring 216 , and a blade
- FIG. 5 further illustrates an opposing hard stop “X” 202 , an opposing hard stop “Y” 208 , an opposing hard stop “Z” 206 , and a full range of rotation 205 for the rotating hard stop 203 .
- FIG. 6 is an example of the rotating hard stop in an intermediate position.
- the intermediate position may be described by a length of travel “X” axis 211 .
- the pusher face 209 may urge the rotating hard stop 203 to an approximate 80 degrees “Z” axis rotation 212 position.
- a slider blade release hard stop 213 may be forced against an opening edge of the housing 101 at a hard stop “Y” direction 224 .
- FIG. 7 is an example of the rotating hard stop in a final locked position.
- the slider 102 may be urged in the “Y” axis 214 direction as limited by the opposing hard stop “Z” 206 . This may further urge the rotating hard stop 203 to rotate into a secondary rotation lock position 215 to achieve a full range of rotation 205 , approximately 100 degrees.
- the slider 102 is forced in both the “X” axis and “Y” axis simultaneously, in combination with the locking geometry of the rotating hard stop 203 against the opposing hard stop face 204 and the hard stop “Y” axis 208 , may allow the slider 102 with the blade 222 installed to resist the opposing “ ⁇ X” directional force 223 .
- FIG. 8 is an example of a slider blade release.
- a slide blade release hard stop 213 may function to not only limit the “X” axis travel, as described herein, but may also be pressed in the Hard Stop “ ⁇ Y” direction 224 to release the slider 102 , allowing the blade 222 to travel beyond an opening of the housing 101 for blade replacement clearance 226 .
- FIG. 9 is an example of the blade retention tabs.
- Blade retention tabs 225 may be flexible beam members that provide force against the blade to prevent the blade 222 from inadvertently or accidentally falling out of the slide.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Knives (AREA)
- Accessories For Mixers (AREA)
Abstract
Description
Claims (13)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16/382,496 US11077567B2 (en) | 2019-04-12 | 2019-04-12 | Automatically retracting scraper with blade stop |
US17/392,167 US11806887B2 (en) | 2019-04-12 | 2021-08-02 | Automatically retracting scraper with blade stop |
US18/503,165 US20240066726A1 (en) | 2019-04-12 | 2023-11-06 | Automatically retracting scraper with blade stop |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16/382,496 US11077567B2 (en) | 2019-04-12 | 2019-04-12 | Automatically retracting scraper with blade stop |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US17/392,167 Continuation US11806887B2 (en) | 2019-04-12 | 2021-08-02 | Automatically retracting scraper with blade stop |
Publications (2)
Publication Number | Publication Date |
---|---|
US20200324422A1 US20200324422A1 (en) | 2020-10-15 |
US11077567B2 true US11077567B2 (en) | 2021-08-03 |
Family
ID=72749472
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/382,496 Active 2039-04-16 US11077567B2 (en) | 2019-04-12 | 2019-04-12 | Automatically retracting scraper with blade stop |
US17/392,167 Active 2040-01-06 US11806887B2 (en) | 2019-04-12 | 2021-08-02 | Automatically retracting scraper with blade stop |
US18/503,165 Pending US20240066726A1 (en) | 2019-04-12 | 2023-11-06 | Automatically retracting scraper with blade stop |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US17/392,167 Active 2040-01-06 US11806887B2 (en) | 2019-04-12 | 2021-08-02 | Automatically retracting scraper with blade stop |
US18/503,165 Pending US20240066726A1 (en) | 2019-04-12 | 2023-11-06 | Automatically retracting scraper with blade stop |
Country Status (1)
Country | Link |
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US (3) | US11077567B2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7054964B1 (en) * | 2021-10-25 | 2022-04-15 | オルファ株式会社 | knife |
CN117921046B (en) * | 2024-03-22 | 2024-05-31 | 山西昊坤法兰股份有限公司 | Flange lock ring cutting device |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2198111A (en) * | 1938-11-01 | 1940-04-23 | Dimgor Corp | Fur knife |
US4281458A (en) * | 1978-12-27 | 1981-08-04 | Okada Kogyo Kabushiki Kaisha | Compact safety knife |
US4316324A (en) * | 1979-12-13 | 1982-02-23 | Cochran Rex H | Auxiliary slitting blade for a cutting instrument |
US5720105A (en) * | 1993-08-31 | 1998-02-24 | Better Tools, Inc. | Utility knife with multi-purpose blade |
US20040111106A1 (en) * | 2002-08-23 | 2004-06-10 | Iske Mark L. | Spring-actuated, retractable-bladed surgical scalpel |
US20060260137A1 (en) * | 2005-05-18 | 2006-11-23 | Flagg Douglas B | Locking mechanism for folding knife |
US20100088900A1 (en) * | 2008-10-13 | 2010-04-15 | Adco Industries-Technologies, L.P | Utility Cutter |
US20130283624A1 (en) * | 2012-04-26 | 2013-10-31 | Thomas Scimone | Ceramic cutting blades |
US20140290070A1 (en) * | 2013-03-27 | 2014-10-02 | Thomas Jay LANDWEHR | Scraper hand tool |
-
2019
- 2019-04-12 US US16/382,496 patent/US11077567B2/en active Active
-
2021
- 2021-08-02 US US17/392,167 patent/US11806887B2/en active Active
-
2023
- 2023-11-06 US US18/503,165 patent/US20240066726A1/en active Pending
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2198111A (en) * | 1938-11-01 | 1940-04-23 | Dimgor Corp | Fur knife |
US4281458A (en) * | 1978-12-27 | 1981-08-04 | Okada Kogyo Kabushiki Kaisha | Compact safety knife |
US4316324A (en) * | 1979-12-13 | 1982-02-23 | Cochran Rex H | Auxiliary slitting blade for a cutting instrument |
US5720105A (en) * | 1993-08-31 | 1998-02-24 | Better Tools, Inc. | Utility knife with multi-purpose blade |
US20040111106A1 (en) * | 2002-08-23 | 2004-06-10 | Iske Mark L. | Spring-actuated, retractable-bladed surgical scalpel |
US20060260137A1 (en) * | 2005-05-18 | 2006-11-23 | Flagg Douglas B | Locking mechanism for folding knife |
US20100088900A1 (en) * | 2008-10-13 | 2010-04-15 | Adco Industries-Technologies, L.P | Utility Cutter |
US20130283624A1 (en) * | 2012-04-26 | 2013-10-31 | Thomas Scimone | Ceramic cutting blades |
US20140290070A1 (en) * | 2013-03-27 | 2014-10-02 | Thomas Jay LANDWEHR | Scraper hand tool |
Also Published As
Publication number | Publication date |
---|---|
US20200324422A1 (en) | 2020-10-15 |
US20240066726A1 (en) | 2024-02-29 |
US20210362358A1 (en) | 2021-11-25 |
US11806887B2 (en) | 2023-11-07 |
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AS | Assignment |
Owner name: SLICE, INC., FLORIDA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SCIMONE, THOMAS;REEL/FRAME:057424/0213 Effective date: 20210903 Owner name: SLICE, INC., FLORIDA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:GALLEGOS, ROBERT JOSEPH;REEL/FRAME:057392/0335 Effective date: 20210903 |
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